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United States Patent | 6,209,409 |
Kitahata ,   et al. | April 3, 2001 |
For prevention of direct contact of a pinion housing formed of magnesium alloy with a metal of a different type, there is provided an insulating portion formed by a chromate treatment and a painting coating.
Inventors: | Kitahata; Kouji (Osaka, JP); Miyazaki; Osamu (Kashihara, JP) |
Assignee: | Koyo Seiko Co., Ltd. (Osaka, JP) |
Appl. No.: | 151206 |
Filed: | September 11, 1998 |
Sep 19, 1997[JP] | 9-273559 |
Current U.S. Class: | 74/388PS; 74/606R |
Intern'l Class: | B62D 005/10 |
Field of Search: | 74/388 PS,498,606 R 180/417,428 403/357,404 |
3779592 | Dec., 1973 | Golze et al. | 293/122. |
4478915 | Oct., 1984 | Poss et al. | 403/404. |
4608876 | Sep., 1986 | Rosell | 74/388. |
5020934 | Jun., 1991 | Floren et al. | 403/404. |
5735718 | Apr., 1998 | Ekwall | 440/83. |
Foreign Patent Documents | |||
2 623 933 | Jun., 1989 | FR. | |
2 202 502 | Sep., 1988 | GB. | |
64-31986 | Feb., 1989 | JP. | |
4-5102 | Jan., 1992 | JP. |
Marks' Standard Handbook for Mechanical Engineers, tenth edition, McGraw-Hill, p. 6-99, Dec. 1996.* Patent Abstracts of Japan, vol. 004, No. 123 (M-029), Aug. 30, 1980. |